131314247 has 2 divisors, whose sum is σ = 131314248. Its totient is φ = 131314246.

The previous prime is 131314243. The next prime is 131314283. The reversal of 131314247 is 742413131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131314247 - 2² = 131314243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131314243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65657123 + 65657124.

It is an arithmetic number, because the mean of its divisors is an integer number (65657124).

Almost surely, 2^131314247 is an apocalyptic number.

131314247 is a deficient number, since it is larger than the sum of its proper divisors (1).

131314247 is an equidigital number, since it uses as much as digits as its factorization.

131314247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 131314247 is about 11459.2428632960. The cubic root of 131314247 is about 508.2810860452.

Adding to 131314247 its reverse (742413131), we get a palindrome (873727378).

The spelling of 131314247 in words is "one hundred thirty-one million, three hundred fourteen thousand, two hundred forty-seven".